Análisis de variables que afectan la dureza superficial de un acero HSS utilizado para producir lámina rolada en caliente.
- Autores: Roberto González, Francisco Martínez, Sandra Sanmiguel, Rumualdo Servín, Emilio Camporredondo
- Localización: Ciencias de la Ingeniería y Tecnología Handbook T-V: Congreso Interdisciplinario de Cuerpos Académicos / coord. por Antonio Alberto Aguilar Moreno, María de Jesús Rodríguez Vargas, Martín Cano Contreras, 2014, ISBN 978-607-8324-26-2, págs. 247-254
- Idioma: español
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Resumen
Hot strip is one of the most used metalworking process employed to produce steel, where the hardness in the work rolls is the most critical variable; in the development of this work, there were a series of hardness and metallographic tests, that were made from a sample that was extracted from the shell (layer) from a work roll, which is used in the hot strip mill proccess., The roll was made of High Speed Steel (HSS). The following research consists to establish a relationship between surface hardness with grain size, the percentage of microporosity and ratio and carbides.
According to the results obtained during the macrodhardness tests, it can be conclude that the high values of hardness of 60HRC to 66HRC correspond to the same areas where the degree of microporosity is the lowest values of 0% to 1%, and density of carbides are entitled to the highest values of 6% to 10%.
Making an analysis of these three variables can be confirmed the hypothesis, which states that the hardness is a function of the density and morphology of carbides, the alloy elements and microporosity.
